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用电化学方法在导电基体电极上制备出性能稳定的铁氰化镍(NiHCF)膜电极。对NiHCF膜电极的电化学行为进行了表征,并研究了电极对水合肼、甲基肼、二甲基肼等肼类物质的电催化氧化作用。结果表明肼在NiHCF膜电极上的氧化电位比在玻碳电极上负移600mV以上,而且在肼的浓度为1.0×10~(-6)～1.0×10~(-2)mol/L范围内,催化峰电流与肼浓度呈良好的线性关系。用于含肼样品中肼含量的测定,得到满意的结果。
A stable nickel iron (NiHCF) film electrode was fabricated on the conductive substrate by electrochemical method. The electrochemical behavior of NiHCF membrane electrode was characterized and the electrocatalytic oxidation of hydrazine hydrate, methylhydrazine, dimethylhydrazine and other hydrazine species was studied. The results showed that the oxidation potential of hydrazine on the NiHCF membrane electrode was more than 600mV negative at the glassy carbon electrode and the concentration of hydrazine was within the range of 1.0 × 10 -6 -6.0 × 10 -2 mol / L , The catalytic peak current and hydrazine concentration showed a good linear relationship. Hydrazine for hydrazine samples for the determination of hydrazine content, get satisfactory results.